Pile-pulling rig



PatentedSept. 13, 1921.

6 m n e O m 5 UNITED STATES PATENT OFFICE.

mLcoLm human. or DOVER, NEW JERSEY, ASSIGNOR TO McKIERNAN-TEBRY DRILL COMPANY, or NEW YORK, N. Y., A coaroaAmoN on NEW messy.

PILE-PULLIN RIG.

To all whom ii may concern:

Be it known that I, MALCOLM D. BIKER, a citizen ofthe United States, and a resident of Dover, in the county of Morris and State of New Jersey, have invented certain new and useful Improvements in Pile-Pulling Rigs, of which the following is a specification.

My invention relates to devices for pulling piles, particularly sheet piling, by means of power apparatus. In brief, the device to which my invention appertains, consists of a form of inverted pile driving. hammer,

hung from a derrick arm, the hammer operating upward on an anvil block over which passes a cable sling fastened by a clamp to the piling, thereby transmittingthe blows of the hammer to the piling.

It is the object of the invention to provide a well constructed, compact, simple and ellicacious pile pulling rig, readily transported and set up for use and the parts of whichmay be easily and quickly repaired or renewed in the field.

Another object of the invention is the provision of a sling orflexible connection between the piling and the operatin mechanism, permitting the piling after being withdrawn, to be swung clear and laid down, after which the connection may be detached.

With the foregoing and other objects in view which will become apparent as the description proceeds, my invention resides in the combination and arrangementof parts and in the details of construction described in the specification and particularly pointed out in the appended claims, it being understood that I do not limit myself to the precise embodiment of the invention herein disclosed and changes can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure 1 is an elevation of the device in position for use.

Fig. 2 is a top view of the device showing the arrangement of the cable sling, the retaining rin and other parts, with the supporting tab e shown in section.

Fig. 3 is a perspective diagram which illustrates the relative arrangement of the cable sling and the supporting cable.

Fig. 4 is a perspective view of a false block and a retaining ring slightly separated in order to show their construction clearly.

Specification of Letters Patent. i Patented Sept. 13, 1921,

Application filed July 10, 1920. Serial No. 895,334.

Similar reference numbers refer to similar parts throughout the several views.

In the drawings, The numeral 10 designates the main casing of a usual form of pneumatic hammer, the enlargement 9 containing the usual valves and air rts for the control and operation of the ing 10 is a ring 8 for the support of the hammer when acting in the reverse position as a pile driving mechanism. At the other.

extremity of the casing are guides 6, 6, 7 7 afiixed thereto, the entire device being supported in the present pile pulling position by a cable 5 which passes under the casmg and through the ring 8, with its ends 3, 4 looped and banded or spliced, and slipped over the hook 2 which is hung from a derrick arm by a cable 1.

Between the guides is an anvil block 20 which rests on a seat 19, and receives directly the blows of the hammer piston. This anvil block has a guided motion limited by the undercutting of the guides as at 17, 18. Above the anvil block is a false block 16 which rests directly on the anvil block and acts therewith. This false block 16 is diagonally grooved on top for the reception of the several convolutions of the cable sling, three grooves being shown for the parts 13, 14, 15 of the cable.

The false block 16 is also undercut at the sides 11, 12 (Figs. 2 and 4) for the reception of a retaining ring 21. This ring passes around all the cables, holding them in position, and at the same time serving to keep the hammer casing upright in its sling, there being no other means used for holding the parts together. The retaining ring 21 rests on the anvil block 20 and slides with the anvil in the guides 6, 6, 7, 7. By the use of the re taining ring shown for the purpose of bold ing the pulling device to the hammer, the device may be readily attached or detached from the hammer by the workman without tools of any kind.

13, 14, 15 are portions of a single cable (Fig. 3) and are looped around pins 28, 29 passing between the two parts of a piling clamp 30, the loops being secured by bands such as 26, 27 or by other desired means. The clamp 30 has extended portions 22, secured to the piling 25 by bolts 23, 24.

The use of cable for the pulling rig gives a material which is readily renewable by ammer piston. On the casthe workmen in the field in case of wear or destruction, and without excessive cost.

'novel in that it reduces to a minimum the shear on the pins 28, 29 which secure the cable, and eliminates the possibility of these pins bending so that the clamp cannot be manipulated.

Having thus described one form of applying my invention, what I desire to claim 1. In a pile pulling rig the combination of a power hammer, a cable sling connected therewith and means for fastening said sling to a pile, whereby the action of said hammer is transmitted to said pile. I

2. In a pile pulling rig the combination of a hammer having an anvil block, a false block on said anvil block and coacting therewith, a cable sling passing over said false block and means for fastening said cable sling to a pile, whereby the action of said hammer is transmitted to said pile.

3. In a pile pulling rig a hammer and means, comprising an anvil block and a cable sling, for transmitting the action of said hammer to a pile.

4. In a pile pulling rig a hammer, a cable sling and means for fastening said cable sling to a pile comprising a two part clamp,

pins passing through the two parts of said clamp and through loops in said cable sling, whereby said loops may be held between the parts of said clamp. I

5. In a pile pulling rig, a hammer, a false block thereon, a cable sling passing over said false block and attached to a pile and means comprising a retaining ring, to hold said cable sling in cooperating position with said hammer.

6. In a pile pulling rig, a hammer comprising an anvil block, a false block thereon, a cable sling passing over said false block and attached to a pile, a retaining ring around said cable sling and said false block, and means to limit the motion of said anvil block.

7. In a device of the character described, a hammer comprising a casing, guides projecting therefrom, and an anvil block between the guides, a supporting cable for the hammer, a false block on the anvil block, a cable sling passing over said false block and a retaining ring around said false block, and holding said supporting cable and said cable sling in position.

8. In a pile pulling rig, a hammer comprisin an anvil block and guides therefor, a false block on the anvil block, a cable sling passing over said false block and attached to a pile, a supporting cable for said casing, and a retaining ring around said cable sling, said false block and said supporting cable, and resting in the undercut portions of said guides, whereby said hammer is kept in upright position in the cable sling.

9. In a pile pulling rig a hammer, :1 casing for said hammer and having guides, an anvil block acted upon by said hammer and in operative relation to said guides, undercut portions on said guides limiting the motion of said anvil block, a false block on said anvil block, a cable sling passing over said false block and attached to a pile, a supporting cable for said casing, and a retaining ring around said cable sling, said false block and said supporting cable and. resting in the undercut portions of said guides, whereby said hammer is kept in upright position in the cable sling.

10. In a pile pulling rig a hammer, a false block thereon having its upper surface formed to receive a plurality of convolutions of a cable, a cable sling passing around the hammer and over said upper surface of the false block. and means for fastening the ends of said sling to a pile.

In witness whereof I hereunto set my hand this 9th day of July, 1920.

MALCOLM D. BIKER. 

